Grade 11 Computer Science Exit Ticket: Measurement

Measurement Exit Ticket

Grade 11 Computer Science Measurement Exit Ticket Medium 20 Questions 8 Views

Classroom Worksheet

Grade 11 Computer Science Exit Ticket: Measurement

Measurement Exit Ticket

Name____________________________

Date________________

Score______ / 20

Grade: Grade 11

Subject: Computer Science

Topic: Measurement

Time: 20 Minutes

Difficulty: Medium

Questions: 20

Instructions:
Read each question carefully and answer in complete sentences when needed. Show your work for calculation questions. Complete all 20 questions before submitting your exit ticket.

Skills Practiced:

Measurement
Computer Science
Critical Thinking
Problem Solving

1Question

What does the term measurement mean in computer science?

2Question

Name one reason why accurate measurement is important in computer science.

3Question

What unit is commonly used to measure computer storage size?

4Question

Convert 1,024 bytes to kilobytes.

5Question

Convert 2 megabytes to kilobytes.

6Question

A file is 3 gigabytes. How many megabytes is that?

7Question

What is the difference between bits and bytes?

8Question

A sensor records a temperature of 21.5°C. Why is a decimal value useful in measurement?

9Question

In a program, a timer measures how long a task takes. What type of measurement is this?

10Question

A task takes 250 milliseconds. How many seconds is that?

11Question

A webpage loads in 1.8 seconds on one computer and 2.4 seconds on another. Which computer is faster?

12Question

What is one possible problem if a computer system uses inconsistent units of measurement?

13Question

A dataset stores file sizes in megabytes. Why should the same unit be used for all files when comparing them?

14Question

A computer processes 500 instructions in 5 seconds. What is the average rate in instructions per second?

15Question

A monitor has a refresh rate of 60 Hz. What does this measurement mean?

16Question

A system measures memory usage every 10 seconds. What kind of measurement interval is this?

17Question

A program’s output is measured as 48.7 ms, but the target is 50 ms. Is the program meeting the target? Explain briefly.

18Question

A device reports storage capacity as 500 GB. Approximately how many MB is this?

19Question

Why is precision important when measuring data such as speed, temperature, or memory usage in computer science?

20Question

A program runs three times: 2.1 s, 2.4 s, and 2.3 s. What is the average runtime, and why is averaging useful?

Answer Key

#	Answer
1	Measurement is the process of assigning numbers or values to something using a defined unit or standard.
2	Accurate measurement helps ensure correct results, fair comparisons, and reliable system performance.
3	Bytes and their larger forms, such as kilobytes, megabytes, and gigabytes.
4	1 kilobyte (KB).
5	2,048 kilobytes (KB).
6	3,072 megabytes (MB).
7	A bit is a single binary digit, while a byte is made up of 8 bits.
8	A decimal value allows more precise measurement than a whole number.
9	It is a measurement of time or execution time.
10	0.25 seconds.
11	The computer that loads the webpage in 1.8 seconds is faster.
12	It can cause confusion, incorrect calculations, or unreliable results.
13	Using the same unit makes the comparison accurate and fair.
14	100 instructions per second.
15	The screen refreshes 60 times per second.
16	It is a regular time interval or periodic measurement.
17	Yes. 48.7 ms is less than 50 ms, so it meets the target.
18	500,000 MB approximately, or 512,000 MB if using binary units.
19	Precision helps produce more exact values, better comparisons, and more reliable program or system analysis.
20	The average runtime is 2.27 seconds. Averaging is useful because it gives a more stable measurement than using only one trial.